Attribute visibility task

attr.rake

# TODO: this will fail when run on a project that uses namespaced models
desc "Show visibility of attributes"
task :attr => :environment do
  require 'set'

  models = Dir['**/models/**/*.rb'].map {|f| File.basename(f, '.*').camelize.constantize }
  models.each do |m|
    all = Set.new m.attribute_names
    accessible = Set.new m.accessible_attributes.to_a
    protected_ = Set.new m.protected_attributes.to_a

    if accessible.empty?
      is_accessible = (all - protected_).to_a
    else
      is_accessible = (accessible - protected_).to_a
    end
    non_accessible = ((all - is_accessible) + protected_).to_a
    is_accessible = "None" if is_accessible.empty?

    print m.name, "\n"
    print "  Accessible: ", is_accessible, "\n"
    print "  Nonaccessible: " , non_accessible , "\n\n"
  end
end